How are arrows "Rare" in Skyrim? All I remember them saying is they're less common than in Oblivion where they were stupidly common and stupidly weak.
I doubt there will be any arrow shortages in Skyrim. You just won't be carrying around over 300 arrows everywhere you go when it only takes 46 to clear out an entire dungeon.
http://www.gamersector.com/previews-and-reviews/another-skyrim-update-on-combat
"To reflect this improvement, arrows will become more expensive and a lot less common."
"Lot less common" meaning rare. Or rarer, at least. Every piece of information regarding archery has brought up the fact that arrows are going to be much less common. And if they are that much harder to come by, I think using a bunch of them hoping to hit a bird out of the air falls well into the "cost" portion of a cost / benefit consideration.